Method and apparatus for in-situ detection and determination of

Details Method and apparatus for in-situ detection and determination of Method and apparatus for in-situ detection and determination of

1993-03-24

1993-09-21

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Geochemical, geological, or geothermal exploration

In situ testing

436164, 436169, 422 8207, 422 66, 7386323, G01N 3322, G01N 3324

Patent

active

052468623

ABSTRACT:
A reagent carrying tape is captured between the soil and the outer wall of penetrometer. As the penetrometer moves with respect to the soil, the tape is pressed against an optical window in the penetrometer. Contaminants in the soil reacting with the reagents cause an optically sensible reaction in the tape to occur which is optically detected at the optical port as the penetrometer moves with respect to the tape and the soil sample. The optically sensible reaction occurring in the tape is optically isolated from the masking effects of the soil. A method is also disclosed.

REFERENCES:
patent: 2242161 (1941-05-01), Athy et al.
patent: 4056969 (1977-11-01), Barringer
patent: 4659676 (1987-04-01), Rhyne
patent: 4696903 (1987-09-01), Owen
patent: 5010776 (1991-03-01), Lucero et al.
patent: 5128882 (1992-07-01), Cooper et al.

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